Plate Tectonics Continental Drift

Ppt Continental Drift Plate Tectonics Powerpoint Presentation Free Plate tectonics is the theory that earth's land masses are in constant motion. the realization that earth's land masses move was first proposed by alfred wegener, which he called continental drift. he is shown here in greenland. we don’t perceive that the continents we live on are moving. Plate tectonics refers to the process of plate formation, movement, and destruction. it finds its foundations in two theories, continental drift and sea floor spreading. continental drift describes the movements of continents over the earth's surface. sea floor spreading refers to the creation new oceanic plate material and movement away from.

Plate Tectonics Definition Theory Types Facts Evidence German meteorologist alfred wegener is often credited as the first to develop a theory of plate tectonics, in the form of continental drift.bringing together a large mass of geologic and paleontological data, wegener postulated that throughout most of geologic time there was only one continent, which he called pangea, and the breakup of this continent heralded earth’s current continental. Continental drift, large scale horizontal movements of continents relative to one another and to the ocean basins during one or more episodes of geologic time. this concept was an important precursor to the development of the theory of plate tectonics, which incorporates it. the idea of a large scale displacement of continents has a long history. Plate tectonics (from latin tectonicus, from ancient greek τεκτονικός (tektonikós) 'pertaining to building') [ 1 ] is the scientific theory that earth 's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago. [ 2 ][ 3 ][ 4 ] the model builds on the concept of continental. Continental drift is the theory, originating in the early 20th century, that earth's continents move or drift relative to each other over geologic time. [1] the theory of continental drift has since been validated and incorporated into the science of plate tectonics , which studies the movement of the continents as they ride on plates of the.